HD64570 Datasheet, PDF (418/469 Pages) Hitachi Semiconductor – Serial Communications Adaptor

Register
Interrupt Control
Interrupt Vector Register
(IVR)
Address
CPU CPU
Mode Mode
0, 1 2, 3 Remarks
1AH 1BH
Bit name
7
6
5
4
3
2
1
0
IVR7 IVR6 IVR5 IVR4 IVR3 IVR2 IVR1 IVR0
Read/Write
Initial value
R/W R/W R/W R/W R/W R/W R/W R/W
0
0
0
0
0
0
0
0
Not used
1BH 1AH
Fixed vector address
Interrupt Modified Vector
Register (IMVR)
1CH 1DH
7
6
5
4
3
2
1
0
Bit name IMVR7 IMVR6 — — — — — —
Not used
Not used
Not used
Read/Write R/W R/W — — — — — —
Initial value
0
0
0
0
0
0
0
0
Hardware-generated code
1DH
1EH
1FH
1CH
1FH
1EH
Modified vector address
Rev. 0, 07/98, page 402 of 453